A good-symmetrical Ku-band corrugated horn feed with small diameter for directional radiation is proposed in this paper which is composed of a corrugated radiator and a mode converter. To concentrate the impedance transformation, 15 radial grooves are curved inside the horn. And the mode converter is slotted in the radial direction where the corresponding groove depth is changed from $lambda/2$ to $lambda/4$ to realize the conversion from TE11to HE11. Then, the converted HE11mode is transmitted to the corrugated horn and a good directional pattern is obtain. To verify the design, a horn prototype is fabricated and measured. The measured results show that the VSWR is 1.2:1 covering the range from 12.25 to 15.5 GHz and the good symmetry of the patterns are also gotten, while the simulations indicate the designed horn has low side lobes.
{"title":"Design of A Ku-band Corrugated Horn With Good-Symmetrical Pattern","authors":"Si-min Li, Zhuo Liu, W. Cao, Xinhua Yu, Yiying Wang, Chen-Wu Yu","doi":"10.1109/ISAPE.2018.8634016","DOIUrl":"https://doi.org/10.1109/ISAPE.2018.8634016","url":null,"abstract":"A good-symmetrical Ku-band corrugated horn feed with small diameter for directional radiation is proposed in this paper which is composed of a corrugated radiator and a mode converter. To concentrate the impedance transformation, 15 radial grooves are curved inside the horn. And the mode converter is slotted in the radial direction where the corresponding groove depth is changed from $lambda/2$ to $lambda/4$ to realize the conversion from TE11to HE11. Then, the converted HE11mode is transmitted to the corrugated horn and a good directional pattern is obtain. To verify the design, a horn prototype is fabricated and measured. The measured results show that the VSWR is 1.2:1 covering the range from 12.25 to 15.5 GHz and the good symmetry of the patterns are also gotten, while the simulations indicate the designed horn has low side lobes.","PeriodicalId":297368,"journal":{"name":"2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123476796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-01DOI: 10.1109/ISAPE.2018.8634193
Wei Wang, Tiezhu Li, J. Jiao, Gang Li
Aiming at the problem that it is difficult to detect target full-space polarization characteristic by appropriate to backward detection and polarization imaging in short range in the target recognition, test method for full-space polarization characteristic, based on BRDF test system, was proposed. By BRDF test system, typical background samples were tested to get full-space scattering polarization characteristics. Targets were recognized by distinguishing typical background samples with target samples, through analyzing the scattered light intensity and full-space polarization characteristics. Test result proves that the test method by BRDF test system can effectively identify the targets in a typical environmental background.
{"title":"Test Method for Target Full Spatial Polarization Characteristics by BRDF Test System","authors":"Wei Wang, Tiezhu Li, J. Jiao, Gang Li","doi":"10.1109/ISAPE.2018.8634193","DOIUrl":"https://doi.org/10.1109/ISAPE.2018.8634193","url":null,"abstract":"Aiming at the problem that it is difficult to detect target full-space polarization characteristic by appropriate to backward detection and polarization imaging in short range in the target recognition, test method for full-space polarization characteristic, based on BRDF test system, was proposed. By BRDF test system, typical background samples were tested to get full-space scattering polarization characteristics. Targets were recognized by distinguishing typical background samples with target samples, through analyzing the scattered light intensity and full-space polarization characteristics. Test result proves that the test method by BRDF test system can effectively identify the targets in a typical environmental background.","PeriodicalId":297368,"journal":{"name":"2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123979440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-01DOI: 10.1109/ISAPE.2018.8634310
P. Yang, Jian Kang, R. Wu, X. Ren, Y. Q. Zhang, X. M. Zhu, Y. Zhao, Y. Q. Wang
In this paper, the Doppler spectrum of backscattered echoes from moving target above time-varying sea surfaces is investigated by utilizing the quasi-stationary algorithm, i.e., approximating the time-domain problem by repeatedly implementing the frequency-domain method. In order to fast and accurately solve the composite scattering problem of time-varying sea surfaces with a Low-flying small target above it, a hybrid algorithm of Kirchhoff approximation (KA) and method method-of-moments (MoM) is utilized in this paper for analyzing the Doppler spectrum signatures. The effect of the speed of flying target on Doppler spectrum signatures of a low-flying small target above time-varying sea surface is investigated in this paper.
{"title":"Doppler Spectrum of Backscattered Field from Time-Varying Sea with a Low-Flying Small Target Above It","authors":"P. Yang, Jian Kang, R. Wu, X. Ren, Y. Q. Zhang, X. M. Zhu, Y. Zhao, Y. Q. Wang","doi":"10.1109/ISAPE.2018.8634310","DOIUrl":"https://doi.org/10.1109/ISAPE.2018.8634310","url":null,"abstract":"In this paper, the Doppler spectrum of backscattered echoes from moving target above time-varying sea surfaces is investigated by utilizing the quasi-stationary algorithm, i.e., approximating the time-domain problem by repeatedly implementing the frequency-domain method. In order to fast and accurately solve the composite scattering problem of time-varying sea surfaces with a Low-flying small target above it, a hybrid algorithm of Kirchhoff approximation (KA) and method method-of-moments (MoM) is utilized in this paper for analyzing the Doppler spectrum signatures. The effect of the speed of flying target on Doppler spectrum signatures of a low-flying small target above time-varying sea surface is investigated in this paper.","PeriodicalId":297368,"journal":{"name":"2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126131587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-01DOI: 10.1109/ISAPE.2018.8634219
Ping Ma, Yang Lu, Y.R. Hou, Liang Li, Xiongwen Zhao, Lei Zhang, Hang Zhu
This paper proposes a multi-service QoS (Quality of Service) algorithm for TD-LTE (time division-long term evolution) 230 MHz power wireless private networks, which can guarantee sufficient resource allocation for higher QoS services with traffic congestion. The validation is performed with NS-3 simulations.
提出了一种适用于TD-LTE(时分长期演进)230 MHz功率无线专网的多业务QoS (Quality of Service)算法，该算法可以保证在流量拥塞的情况下为更高QoS的业务提供充足的资源分配。通过NS-3仿真进行了验证。
{"title":"A Multi-Service QoS Guaranteed Scheduling Algorithm for TD-LTE 230 MHz Power Wireless Private Networks","authors":"Ping Ma, Yang Lu, Y.R. Hou, Liang Li, Xiongwen Zhao, Lei Zhang, Hang Zhu","doi":"10.1109/ISAPE.2018.8634219","DOIUrl":"https://doi.org/10.1109/ISAPE.2018.8634219","url":null,"abstract":"This paper proposes a multi-service QoS (Quality of Service) algorithm for TD-LTE (time division-long term evolution) 230 MHz power wireless private networks, which can guarantee sufficient resource allocation for higher QoS services with traffic congestion. The validation is performed with NS-3 simulations.","PeriodicalId":297368,"journal":{"name":"2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124966791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-01DOI: 10.1109/ISAPE.2018.8634361
Ang Xia, Zhongyu Wang, S. Geng, Xiongwen Zhao, Rui Zhang, Yongsheng Liu, Yigang Geng
In this paper, based on 28 GHz MIMO ($4times 4$) channel measurements performed for both LOS and NLOS scenarios, channel capacity and system link budget are analyzed. The MIMO channel capacity is modeled as function of distance. Moreover, spatial correlation between antenna elements on channel capacity is studied. Specifically, considering MIMO antenna elements are for uncorrelated, partial-correlation and full-correlation, channel capacity is investigated. Results show that correlation coefficient decreases with the increasing of distance generally. The uncorrelated channel can achieve much bigger capacity than partial correlation and complete correlation channels. In complete correlation MIMO channel, simulation results fit quite well with measurement data. This indicates that the real MIMO channel is more close to complete correlation fading channel. The provided results are useful for design of 5G wireless communication systems.
本文基于对LOS和NLOS场景进行的28 GHz MIMO ($4 × 4$)信道测量，分析了信道容量和系统链路预算。MIMO信道容量是距离的函数。此外，还研究了天线单元间信道容量的空间相关性。具体来说，考虑到MIMO天线单元的不相关、部分相关和完全相关，对信道容量进行了研究。结果表明，相关系数总体上随距离的增加而减小。不相关信道比部分相关信道和完全相关信道的容量大得多。在完全相关MIMO信道下，仿真结果与实测数据吻合较好。这表明真正的MIMO信道更接近于完全相关衰落信道。所得结果可为5G无线通信系统的设计提供参考。
{"title":"28 GHz MIMO Channel Capacity Analysis for 5G Wireless Communication Systems","authors":"Ang Xia, Zhongyu Wang, S. Geng, Xiongwen Zhao, Rui Zhang, Yongsheng Liu, Yigang Geng","doi":"10.1109/ISAPE.2018.8634361","DOIUrl":"https://doi.org/10.1109/ISAPE.2018.8634361","url":null,"abstract":"In this paper, based on 28 GHz MIMO ($4times 4$) channel measurements performed for both LOS and NLOS scenarios, channel capacity and system link budget are analyzed. The MIMO channel capacity is modeled as function of distance. Moreover, spatial correlation between antenna elements on channel capacity is studied. Specifically, considering MIMO antenna elements are for uncorrelated, partial-correlation and full-correlation, channel capacity is investigated. Results show that correlation coefficient decreases with the increasing of distance generally. The uncorrelated channel can achieve much bigger capacity than partial correlation and complete correlation channels. In complete correlation MIMO channel, simulation results fit quite well with measurement data. This indicates that the real MIMO channel is more close to complete correlation fading channel. The provided results are useful for design of 5G wireless communication systems.","PeriodicalId":297368,"journal":{"name":"2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130566920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-01DOI: 10.1109/ISAPE.2018.8634059
Yang Zhao, Zhenyang Liu, Xing Fan, Ping Gao, Tongzhan Liu
Aiming at the demand of small-aperture portable terminals for low-earth-orbit satellite communication, a Ka-band petaloid splash-plate reflector antenna loaded with polystyrene is presented in this paper. Compared to the traditional reflector antennas, the proposed antenna has a wide working band, a high radiation efficiency and a low profile. The main reflecting surface of the proposed antenna adopts a design of split-disassembly structure, and the sub-reflecting surface requires no additional supporting rods, which makes the antenna smaller and more portable. The designed antenna can work at 17.7GHz to 20.2GHz for reception and 27.5GHz to 30.0GHz for transmission. The electrical performance of the antenna is simulated by considering the influence of the structural and processing design. The simulated results show that the VSWR of the antenna across the whole operating band is less than 2, and the aperture efficiency at the reception band and the transmission band is 57%∼68% and 50%∼62% respectively. The correctness of the simulated results were verified by different simulation algorithms, which provides a strong support for the subsequent engineering design.
{"title":"Design of a Ka Broadband Satellite Communication Antenna for Low-Earth-Orbit Constellation","authors":"Yang Zhao, Zhenyang Liu, Xing Fan, Ping Gao, Tongzhan Liu","doi":"10.1109/ISAPE.2018.8634059","DOIUrl":"https://doi.org/10.1109/ISAPE.2018.8634059","url":null,"abstract":"Aiming at the demand of small-aperture portable terminals for low-earth-orbit satellite communication, a Ka-band petaloid splash-plate reflector antenna loaded with polystyrene is presented in this paper. Compared to the traditional reflector antennas, the proposed antenna has a wide working band, a high radiation efficiency and a low profile. The main reflecting surface of the proposed antenna adopts a design of split-disassembly structure, and the sub-reflecting surface requires no additional supporting rods, which makes the antenna smaller and more portable. The designed antenna can work at 17.7GHz to 20.2GHz for reception and 27.5GHz to 30.0GHz for transmission. The electrical performance of the antenna is simulated by considering the influence of the structural and processing design. The simulated results show that the VSWR of the antenna across the whole operating band is less than 2, and the aperture efficiency at the reception band and the transmission band is 57%∼68% and 50%∼62% respectively. The correctness of the simulated results were verified by different simulation algorithms, which provides a strong support for the subsequent engineering design.","PeriodicalId":297368,"journal":{"name":"2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132515525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-01DOI: 10.1109/ISAPE.2018.8634031
Cheng Wang, Liang Chen, Q. Chen, Haisheng Zhao
By using the data of Phase Array L-band Synthetic Aperture Radar (PALSAR) on board Advanced Land Observing Satellite (ALOS), this paper shows the compensation of ionospheric phase scintillation. The phase scintillation is generated based on the multiple phase screen theory and added into the PALSARL1.0 data (unfocused raw data). The Phase Gradient Autofocus (PGA) is then applied to remove the phase distortion. Simulations show that after compensation, the effects of ionospheric phase scintillation is obviously removed.
{"title":"Compensation of Ionospheric Phase Scintillation of ALOS PALSAR Imaging","authors":"Cheng Wang, Liang Chen, Q. Chen, Haisheng Zhao","doi":"10.1109/ISAPE.2018.8634031","DOIUrl":"https://doi.org/10.1109/ISAPE.2018.8634031","url":null,"abstract":"By using the data of Phase Array L-band Synthetic Aperture Radar (PALSAR) on board Advanced Land Observing Satellite (ALOS), this paper shows the compensation of ionospheric phase scintillation. The phase scintillation is generated based on the multiple phase screen theory and added into the PALSARL1.0 data (unfocused raw data). The Phase Gradient Autofocus (PGA) is then applied to remove the phase distortion. Simulations show that after compensation, the effects of ionospheric phase scintillation is obviously removed.","PeriodicalId":297368,"journal":{"name":"2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132263010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-01DOI: 10.1109/ISAPE.2018.8634329
Zonghua Ding, Zhimei Tang, Ning Wang, Liandong Dai, Song Yang, Zhengwen Xu
The ionospheric plasma temperatures in March and June measured by the Qujing incoherent scatter radar have been used to study the diurnal variation of electron and ion temperatures with altitude (193-513km). It is found that there exist the morning and sunset enhancement and the daytime constant valley in electron temperature in March. The features like morning overshoot, day time valley (about 1000K) and sunset enhancement (with the maximum 3500K) show larger values at higher altitudes. The electron temperature above 1000K decreases with an increase in density. The sunset peak occurs earlier at higher altitudes. These above characteristic isn't prominent for electron temperature in June and ion temperature in all seasons. Both the electron and ion temperature reach a peak at about 200km and then decreases. The possible mechanism is also presented.
{"title":"Diurnal Variation of Ionospheric Electron and Ion Temperatures with Altitude by QJISR","authors":"Zonghua Ding, Zhimei Tang, Ning Wang, Liandong Dai, Song Yang, Zhengwen Xu","doi":"10.1109/ISAPE.2018.8634329","DOIUrl":"https://doi.org/10.1109/ISAPE.2018.8634329","url":null,"abstract":"The ionospheric plasma temperatures in March and June measured by the Qujing incoherent scatter radar have been used to study the diurnal variation of electron and ion temperatures with altitude (193-513km). It is found that there exist the morning and sunset enhancement and the daytime constant valley in electron temperature in March. The features like morning overshoot, day time valley (about 1000K) and sunset enhancement (with the maximum 3500K) show larger values at higher altitudes. The electron temperature above 1000K decreases with an increase in density. The sunset peak occurs earlier at higher altitudes. These above characteristic isn't prominent for electron temperature in June and ion temperature in all seasons. Both the electron and ion temperature reach a peak at about 200km and then decreases. The possible mechanism is also presented.","PeriodicalId":297368,"journal":{"name":"2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127969122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-01DOI: 10.1109/ISAPE.2018.8634381
Zihao Fu, Xiongwen Zhao, S. Geng, Fei Du, Yu Zhang, Li Huang, Q. Jiang
3GPP (3rd Generation Partnership Project) recommends QuaDRiGa (Quasi-Deterministic Radio Channel Generator) as the 5G preferred simulation platform. In this work, based on experimental measurements performed at 2.55 GHz for both LOS and NLOS scenarios, channel parameters like delay spread (DS), angle spread (AS) are analyzed. Furthermore, based on QuaDRiGa simulation platform, the accuracy of channel parameters like azimuth spread of arrival (ASA), elevation spread of arrival (ESA), azimuth spread of departure (ASD) are validated. The 3D features of received powers are illustrated. Results of QuaDRiGa simulation match quite well with experimental measurement data. This indicates that QuaDRiGa platform can be used for design and simulation of 5G wireless communications systems.
{"title":"Channel Simulation and Validation by QuaDRiGa for Suburban Microcells under 6 GHz","authors":"Zihao Fu, Xiongwen Zhao, S. Geng, Fei Du, Yu Zhang, Li Huang, Q. Jiang","doi":"10.1109/ISAPE.2018.8634381","DOIUrl":"https://doi.org/10.1109/ISAPE.2018.8634381","url":null,"abstract":"3GPP (3rd Generation Partnership Project) recommends QuaDRiGa (Quasi-Deterministic Radio Channel Generator) as the 5G preferred simulation platform. In this work, based on experimental measurements performed at 2.55 GHz for both LOS and NLOS scenarios, channel parameters like delay spread (DS), angle spread (AS) are analyzed. Furthermore, based on QuaDRiGa simulation platform, the accuracy of channel parameters like azimuth spread of arrival (ASA), elevation spread of arrival (ESA), azimuth spread of departure (ASD) are validated. The 3D features of received powers are illustrated. Results of QuaDRiGa simulation match quite well with experimental measurement data. This indicates that QuaDRiGa platform can be used for design and simulation of 5G wireless communications systems.","PeriodicalId":297368,"journal":{"name":"2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126783263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-01DOI: 10.1109/ISAPE.2018.8634400
Cheng Wang, Lei Shi, Yanming Liu, Lei Zhao, Bo Yao, Congying Zhu, Hailiang Wei, Dongyu Si
A new method of distortion cancellation based on channel estimation and equalization is proposed to alleviate the parasitic modulation effect of the non-stationary plasma sheath channel (PSC) on communication signals effectively. This method insert the pilot data into direct sequence spreading telemetry signals and then a novel non-stationary stochastic gradient recursive minimum mean square error (NSGR-MMSE) estimation algorithm is adopted to estimate channel states and equalize the received data at the receiving end. Different from existing mitigation strategies based on reflected signals, the main strategy in this paper is to use practical transmitted signals to mitigate the parasitic modulation effect. The proposed strategy reduces the impact of time delay and improves real-time performance. Compared with traditional minimum mean square error (MMSE) algorithm, the proposed new algorithm only needs a small amount of matrix inverse versus traditional MMSE algorithm, which reduces the computation complexity. Simulation results show that the proposed channel estimation and equalization method can improve the BER performance by three to four orders of magnitude. Moreover, the proposed NSGR-MMSE channel estimation algorithm improves the bit error rate (BER) performance about 1-2dB over the existing MMSE algorithm in the non-stationary plasma sheath channel environment.
{"title":"A Novel Non-stationary Plasma Sheath Channel Estimation and Distortion Cancellation Method","authors":"Cheng Wang, Lei Shi, Yanming Liu, Lei Zhao, Bo Yao, Congying Zhu, Hailiang Wei, Dongyu Si","doi":"10.1109/ISAPE.2018.8634400","DOIUrl":"https://doi.org/10.1109/ISAPE.2018.8634400","url":null,"abstract":"A new method of distortion cancellation based on channel estimation and equalization is proposed to alleviate the parasitic modulation effect of the non-stationary plasma sheath channel (PSC) on communication signals effectively. This method insert the pilot data into direct sequence spreading telemetry signals and then a novel non-stationary stochastic gradient recursive minimum mean square error (NSGR-MMSE) estimation algorithm is adopted to estimate channel states and equalize the received data at the receiving end. Different from existing mitigation strategies based on reflected signals, the main strategy in this paper is to use practical transmitted signals to mitigate the parasitic modulation effect. The proposed strategy reduces the impact of time delay and improves real-time performance. Compared with traditional minimum mean square error (MMSE) algorithm, the proposed new algorithm only needs a small amount of matrix inverse versus traditional MMSE algorithm, which reduces the computation complexity. Simulation results show that the proposed channel estimation and equalization method can improve the BER performance by three to four orders of magnitude. Moreover, the proposed NSGR-MMSE channel estimation algorithm improves the bit error rate (BER) performance about 1-2dB over the existing MMSE algorithm in the non-stationary plasma sheath channel environment.","PeriodicalId":297368,"journal":{"name":"2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123186178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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